03-09-2020 BPU RPT 06 - Laserfiche WebLink

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W A T E R E N E R G Y L I F E RIVERSIDE PUBLIC UTILITIES • ' Board Memorandum P U B L I C U T I L I T I E S BOARD OF PUBLIC UTILITIES DATE: MARCH 9, 2020 ITEM NO: 6 SUBJECT: SUPPLEMENTAL AGREEMENT WITH CDM SMITH, INC. IN RESPONSE TO REQUEST FOR PROPOSAL FOR RIVERSIDE PUBLIC UTILITIES PRAED BOOSTER HYDRAULIC TRANSIENT AND STATION SURGE ISSUES IN AN AMOUNT NOT TO EXCEED $82,370 PLUS A 10% OR $8,237 CHANGE ORDER AUTHORITY AND WORK ORDER NO. 2016310 FOR A TOTAL EXPENDITURE OF $120,607 ISSUES: Approve a Supplemental Agreement with CDM Smith, Inc, of Carlsbad, California, in response to a Request for Proposals for Riverside Public Utilities Praed Booster Hydraulic Transient and Station Surge Issues in an amount not to exceed $82,370.00; authorize a 10% or $8,237 change order authority for the project; and approve Work Order No. 2016310 for a total expenditure of $120,607. RECOMMENDATIONS: That the Board of Public Utilities: Approve a Supplemental Agreement with CDM Smith, Inc. in response to a Request for Proposals for Riverside Public Utilities Praed Booster Hydraulic Transient and Station Surge Issues, in an amount not to exceed $82,370.00; 2. Authorize change order authority in the amount of 10% or $8,237 for Riverside Public Utilities Praed Booster Hydraulic Transient and Station Surge Issues; 3. Approve Work Order No. 2016310 for a total expenditure of in the amount of $120,607 which includes CDM Smith, staff support and change order authority costs for Riverside Public Utilities Praed Booster Hydraulic Transient and Station Surge Issues; and 4. Authorize the City Manager, or designee, to execute the Supplemental Agreement with CDM Smith, Inc. of Carlsbad, California, including making minor and non -substantive changes and to sign all documents and instruments necessary to complete the transactions. BACKGROUND: The Praed pressure zone is a small closed zone that operates without the support of a water supply reservoir and is solely supplied with water from the Praed Booster Station. The Praed Booster Station was built in 1987 and has since experienced additional development over time. In late 2015, customers in a newly developed housing tract began to experience inconsistent pressure issues and at times had low pressure. Staff investigated and was able to rectify most of the issues; however, minor pressure issues